SALES HANDLE Janet Hubbard wraps up her Vengeance in the Vineyard trilogy by highlighting the wine culture of Burgundy, and French inheritance laws, which are convoluted and guaranteed to spark family wars, even unto death. KEY SELLING POINTS Final installment in the Vengeance in the Vineyard trilogy Female sleuth International mystery Wine culture AUDIENCE Fans of the Vengeance in the Vineyard series Fans of international mysteries (especially France) Fans of Martin Walker, Ellen Crosby, and Jean-Pierre Alaux